Emil Motors
Emil Motors, a clean-technology engineering venture, has announced the successful hardware validation of its prototype magnet-free motor concept. This marks the first demonstration of the company’s core architecture in a full-scale research unit, yielding a rich set of measurements and engineering insights to guide the next design iteration.
“This milestone isn’t just about one motor. It’s about proving a new industrial approach. By using common materials, thoughtful design, and uncompromising engineering, we can eliminate scarcity as a barrier to innovation,” says Maximilian Güttinger, co-founder of Emil Motors. “Our responsibility now is to translate that possibility into reproducible, industry-grade products for partners and customers.”
Based in Germany, Emil Motors develops axial-flux induction drives without permanent magnets. Its mission is to deliver scalable, recyclable electric drive units that mitigate supply-chain risks.
Test Bench Setup
In August 2025, Emil Motors conducted a rigorous full-scale test program using a laboratory dynamometer. The prototype underwent dynamic runs and iterative hardware adjustments on a dedicated test bench throughout the month. Earlier diagnostics in March had revealed a stator stiffness issue, resolved by bonding stator segments and adding steel reinforcement with an axial bearing to maintain rotor air gap consistency.
During the first week of testing, a winding asymmetry limited torque at low speeds. Engineers traced the issue to incorrectly transposed parallel strands. To restore operability, the strands were temporarily reconfigured in series, and the connection topology switched from star to delta. These changes, implemented by a partner within a few days, significantly improved high-speed behavior and sustained torque output.
Operating under conservative constraints, the prototype showed promising mechanical and thermal performance. Emil Motors reported peak torque near 270 newton-meters, rotational speeds up to 7,000 revolutions per minute (RPM), and shaft power approaching 68 kilowatts. To protect the sole full-scale unit, tests were capped at roughly 60% of the projected peak torque and speed. A 16-minute high-power run validated the cooling system, with temperatures remaining stable throughout. Voltage limits from the interim winding setup prevented testing at some high-load operating points.
Test results aligned closely with simulation models, reinforcing confidence in the design and informing targeted efficiency improvements. Immediate design updates include correcting strand transposition, restoring the star topology, and tightening manufacturing tolerances to reduce inter-segment gaps. Planned upgrades for the next generation feature a rotor package with high-strength stainless steel layers to eliminate leakage flux, a fully bonded rotor for durability, and revised stator production methods to lower costs and improve precision.
Prototype Internal Components by Emil Motors
Beyond the lab, Emil Motors positions its work as a step toward reducing reliance on rare-earth magnets. By demonstrating a full-size, magnet-free axial-flux induction motor with meaningful torque and speed, the company offers a sustainable, resilient alternative aligned with industry trends.
Emil Motors is actively engaging automotive OEMs and vehicle integrators seeking novel drive architectures. Though still in the prototype phase, the company can design to spec, build tailored units, and scale production as needed. Raw test data will be shared with qualified partners under NDA to support independent evaluation and collaboration.
The bench campaign marks a pivotal proof-of-concept: Emil Motors’ SAM Architecture is operational, core subsystems are validated, and a clear path exists to close efficiency gaps and industrialize the design. Emil Motors invites manufacturers and technical partners to initiate confidential discussions for application-specific development and next-stage prototypes.
Media Contact
Name: Maximilian Güttinger
Email: m.guettinger@emil-motors.com
Published by: Pathos Communications Ltd